Scientists have confirmed what many mothers know: that a one-year-old child's absent-mindedness is replaced with robust memory-recall in the second year of life.
The researchers said their findings add weight to the theory that year-old toddlers are forgetful because the regions of their brains that store and retrieve long-term memories are still forming.
Other scientists said that while the new work confirms earlier research that toddlers' memories improve with age, it remains unclear precisely what causes the improvements.
Harvard University researchers tested three different age groups of toddlers by encouraging them to imitate multi-step tasks such as wiping a table clean and placing a paper towel in a trash can.
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